Which of the following alternatives will be cheaper (1) A 100 h.p AC, 3-phase motor (2) Four motors of 25 h.p each (3) Five motors of 20 h.p each (4) 10 motors of 10 h.p each explain
2513A synchronous machines has higher capacity for (1) Leading power factor (2) Lagging power factor (3) Does not depend upon the power factor of machine (4) None of the above
JSW,
2 15182One 200 V, 100 W bulb is connected in series with primary of a 200 V, 10 kVA transformer. If its secondary is kept open circuited, then the bulb would have (1) Full brightness (2) Poor brightness (3) A little less than full brightness (4) More than full brightness...explain
2 8099The maximum demand of consumer is 2 kW and his daily energy consumption is 20 units. Its Load Factor is (1) 10.15% (2) 41.6 % (3) 50 % (4) 60%
2 22635How to confirm the Phase shifting Transformer VECTOR GROUP relation , as below ZNy11.45d10.45-ZNYy0.15d11.15
2756We have ONLINE UPS 15KvA (3PHASE 440V I/P,3PHASE O/P,440V) I want to step down from 440 to 220 V What to do. Pl. suggest with specification.
ARDE,
1 2445an ac induction motor gets overheated when operated at a low frequency of 25 hz a instead of 50 hz. reason?
1 3125Post New Electrical Engineering Questions
How phase displacement change in the over current relay coils.
Which type of a.c motor is used in the fan (ceiling fan, exhaust fan, pedestal fan, bracket fan etc) which are find in the houses ?
List the advantages of star-delta starter with induction motor?
Describe the test procedure to determine the vector group
what happens to the supply voltage if there is any change in frequency?
How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.
Can we check ELCB constantly from R1 to R8 phase in 1 no DB?
is there any phase difference occurs while primary and secondary side mutual induction occurs?
What magnetic circuit is formed in berry-type constructions and why?
In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans
will 1050kva DG set withstand for back charge of 16MVA transformer
pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..
I am apply the AAI. So i want electrical sample question paper in technical with answer my id is vijayjobsmart@gmail.com
what are the safety measures of induction motor?
what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?
